Type-writing machine.



PATENTED SEPT. 27, 1904.

W. J. BARRON.

. TYPE WRITING MACHINE.

APPLIOATION FILED JUNE 3. 1902.

NO MODEL.

W mm? N\/ENTEIH= TTUHNEY MTNEEEEE:

UNITED STATES Patented September 27, 1904.

PATENT OFFICE.

INALTER J. BARRON, OF BROOKLYN, NEW YORK, ASSIGNOR TO DENSMORE TYPEWRITER COMPANY, OF OF NEW YORK.

SYRACUSE, NEW YORK, A CORPORATION TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 770,952, dated September 27, 1904.

Original application filed November 7, 1901, Serial No. 81,401. Divided and this application filed June 3, 1902. Serial N 0. 110,044. (No model.)

To all whom it may concern:

' Be it known that I, WALTER J. BARRON, a citizen of the United States, and a resident of the borough of Brooklyn, city of New York, in the 5 county of Kings and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This case is a division of my application I filed November 7, 1901, Serial No. 81,401.

My invention relates to type-writing machines, and more particularly to the platenreleasing mechanism; and the object of said invention is to provide simple and efficient mechanism of the character specified.

To these and other ends, which will hereinafter appear, my invention consists in the novel features of construction and combinations of parts hereinafter more fully set forth,

and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicate corresponding parts in the various views, Figure 1 is an 5 enlarged longitudinal sectional view taken through the platen. Fig. 2 is a fragmentary longitudinal section taken through the platen, the parts illustrated being at right angles to those shown in Fig. 1. Fig. 3is a detail face 3 view of the platen-head at the right-hand end of the platen. Fig. 4 is a perspective view of the spindle cross-head and engaging pawls. Fig. 5 is a similar view of the housing with which said head and pawls cooperate. Fig.

6 is an inside face view of the feed ring or wheel of the platen and showing the linespace lever in dotted lines.

The platen 29 may be constructed with a hollow core 31, that is provided with the usual 4 sheath or covering 31 To theleft-hand end is secured a platen-head 32, which may be secured to the core by means of screws 33. A spindle 34 is rigidly connected to the platenhead by a pin 35, which passes through a hole in the spindle and a coinciding hole in a boss 36 of the platen-head. The outer end of this spindle 34 may be provided with a handwheel 37, which is fixed thereto and by means of which the platen may be rotated at all times. The opposite end of the platen is provided 5 with a head 38, which is attached to the core by means of screws 39, which pass through perforations 40 in said head. This head 38 is likewise apertured at 41 for purposes which will hereinafter more clearly appear, and the platen-head 38, in addition to the perforations or apertures 40 and 41, is apertured at 42 to permit free passage of machine-screws 43 therethrough. These screws 43 pass through a plate 44 and through a second plate 45, that has a central aperture and is provided with an extended sleeve 46, that constitutes an elongated bearing for a longitudinallymovable spindle 47. The screws 43 after passing through the two plates 44 and 45 extend 5 through the platen-head 38 and into a flange 49 of the housing 48 to secure all of these parts together. The plate 45 constitutes a bearing for a line-space or platen feed wheel or ring 50. It will be seen that this ring is 7 prevented from lateral displacement by being confined between the plate 44 and the platenhead 38, so that while the ring is free to turn independently on the supporting-plate 45 it cannot move laterally with relation thereto.

The spindle 47 is rigidly connected at its inner end by a set-screw to a cross-head 51, which is provided with a suitable number of engaging pawls or teeth 52, two being shown in the present instance, and the spindle and cross-head and pawls or teeth are adapted to move in the direction of the length of the platen. The outer end of this spindle is rigidly connected to a hand-wheel 53, so as to move therewith, the connecting means being 5 preferably a screw which passes longitudinally through the sleeve of the hand-wheel and enters a threaded opening in the outer end of the spindle, which is preferably headed to fit within a recess with said sleeve. Con- 9 fined within the housing 48, hereinbefore referred to, is an expansion-spring 54, which bears at one end against the inner end of a housing and at its opposite end against the cross-head 51, so as to force the cross-head and the parts carried thereby to the right.

The housing 48 is apertured at 55 on diametrically opposite sides, and through these apertures project thearms of the cross-head, which carry the pawls or teeth 52, the slots or apertures 55 permitting of the cross-head and teeth 52 in the direction of the length of the platen, but enabling the cross-head and housing and its attached parts to rotate together.

The pawls or teeth 52 upon the cross-head are adapted to work through the apertures 41 in the platen-head and into engagement with the toothed surface 56 on the feed-ring 50, as will be seen at Fig. 1 of the drawings. The tension of the spring 54: normally maintains the pawls 52 in engagement with the surface 56 on the inner face of the feed wheel or ring 5O.

This engaging face is preferably a serrated or corrugated face, as indicated at Fig. 6 of the drawings, in order that the pawls 52 may positively engage the ring or wheel 50 and prevent a movement thereof with relation to the pawls and their cross-head. The periphery of the platen feed ring or wheel 50 is provided with the usual ratchet-teeth 57, with which the feed-pawl 58 on the line-space le- Ver 59 cooperates, said lever being pivoted to the platen-frame at 60.

From the foregoing description it will be understood that when the parts are in the normal position (represented in Fig. 1 of the drawings) the spring 5 will maintain a pressure upon the cross-head 51, thus causing the pawls 52 thereof to be projected through the apertures &1 in the cross-head and into contact with the engaging surface 56 on the platen feed-ring 50. The hand-wheel 53 being rigidly connected to the cross-head through the spindle 47 and the cross-head being prevented from rotating independently of the housing 48 will cause all of the parts to rotate togetherthat is to say, the feed-ring 50 will be locked or engaged by the pawls 52 to rotate with the platen-head, its platen, and the handwheel 53. When, however, a longitudinal or inward pressure is imparted to the spindle 47 by pushing in the hand-wheel 53, the crosshead 51 will be forced its spring 54:, thus releasing the pawls 52 from engagement with the face 56 of the feed-ring, but without Withdrawing the pawls from the apertures in the platen-head 38. At this time the platen is free to be rotated independently of the feed-ring, so that by turning either hand-wheel 37 or 53 any desired degree a corresponding rotary movement may be imparted to the platen. As soon as the pressure is released from the hand-wheel 53 the parts are again automatically locked or engaged to cause the hand-wheel53, the feed-ring 50, and the platen to rotate together for ordinary spacing by the line-space pawl 58 and by the hand-wheel 37. The usual spring-pressed roller-detent 50 is employed in connection a free movement 7 against the tension of with the feed-wheel 50 to hold the latter stationary when the platen turns independently thereof and to hold the platen firmly when the parts are in condition for writing. It will be observed that by this feature of my invention I provide a simple and efficient device whereby the platen may be readily released from its step-by-step or line spacing mechanism and then turned to any desired degree or to fractional line-space distances, so that the paper may be adjusted for writing on ruled lines, filling in spaces on printed blanks, making corrections, &c.

What I claim as new, and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination of a platen, a hand-wheel for rotating the platen, a platen feed-wheel, and an engaging pawl rigidly connected to the hand-wheel and adapted to engage the feed-wheel to cause the platen and feed-Wheel to rotate together.

2. In a type-writing machine, the combination of a platen, a hand-wheel for rotating the platen, a platen feed-wheel, an engaging pawl rigidly connected to the hand wheel and adapted to engage the feed-wheel to cause the platen and feed-wheel to rotate together, and a spring for normally maintaining the pawl in engagement with the feed-wheel.

3. In a type-writing machine, the combination of a platen, a platen-head, a hand-wheel for rotating the platen, a platen feed-wheel and engaging pawl rigidly connected to the handwheel and adapted to engage the platen-head and the feed-wheel to cause the platen and feed-wheel to rotate together.

4. In a type-writing machine, the combination of a platen, an apertured platen-head, a hand-wheel for rotating the platen, a platen feed-wheel, an engaging pawl rigidly connected to the hand-wheel and passing through the apertures in the platen-head and engaging the feed-wheel to cause the platen and feedwheel to rotate together.

5. In a type-writing machine, the combination of a platen, an apertured platen-head rigidly secured to the platen, a loosely-mounted platen feed-wheel carried by the platen, a platen hand-wheel which is movable in the direction of the length of the platen, and an engaging pawl rigidly connected to said handwheel and contained between the platen-head and the body of the platen, said pawl projecting through an aperture in the head and into engagement with the feed-wheel whereby said hand-wheel, feed-wheel and platen are locked to rotate together.

6. In a type-Writing machine, the combination of a platen, an apertured platen-head rigidly secured to the platen, a loosely-mounted platen feed-Wheel carried by the platen and having peripheral ratchet-teeth and a pawlengaging surface a platenhand-wheel which the platen, an engaging pawl rigidly connected to said hand-wheel and contained between the platen-head and the body of the platen, said pawl projecting through the aperture in the head and engaging with the pawl-engaging surface of the feed-wheel whereby said handwheel, feed-wheel and platen are locked to rotate together and a spring for normally maintaining said pawl in engagement with its cooperating surface. 1

7. In a type-writing machine, the combination of a platen, a hand-wheel at one end of said platen which is rigidly connected thereto, a hand-wheel at the-opposite end of said platen which is movable with relation to the platen, an engaging pawl operatively connected to the relatively-movable hand-wheel, a platen-head secured to the platen and having an aperture through which the pawl projects, and a platen feed-wheel loosely mounted on the platen and engaged by said pawl.

8. In a type-writing machine, the combination of a platen, a hand-wheel which is rigidly connected thereto, a hand-wheel which is movable lengthwise of the platen, an engaging pawl operatively connected to the movable hand-wheel, a platen-head secured to the platen and having an aperture through which the pawl projects, a platen feed-wheel loosely mounted on the platen and engaged by the said pawl, and a spring for normally maintaining the pawl in the engaging position, whereby the parts are normally engaged to rotate together but a movement of the movable hand-wheel with relation to the platen is effective to release the platen from its feedwheel so that the platen may be turned by either of its hand-wheels.

9. In a type-writing machine, the combination of a platen, a spindle movable in the direction of the length of said platen, a handwheel connected to said spindle, a pawl-bearing cross-head which is likewise connected to said spindle, an apertured platen-head secured to the platen and into the apertures in which the pawls on the cross-head are adapted to project and a loosely-mounted feed-wheel carried by the platen and with which the engaging pawls cooperate to lock the parts to rotate together.

10. In a type-writing machine, the combination of a platen, a spindle movable in the direction of the length of said platen, a handwheel connected to said spindle, a pawl-bearing cross-head which is likewise connected to said spindle, an apertured platen-head secured to the platen and through the apertures in which the pawls on the cross-head are adapted to project, a loosely-mounted feed-wheel carried by the platen and with which the engaging pawls are adapted to engage when they are projected through the apertures in the platen-head to lock the parts to rotate together, a spring for normally maintaining said parts in engagement and a second hand-wheel for said platen, a

which is rigidly secured to the platen and is adapted to rotate the same at all times.

11. In a type-writing machine, the combination of a platen, a platen-head rigidly secured thereto, a loosely-mounted feed-wheel for said platen and a movable pawl which is independent of said platen-head and wheel but is adapted to engage the said parts to cause them to rotate together or to be disengaged from the feed-wheel to enable the platen to move independently of its feed-wheel.

12. In a type-writing machine, the combination of a platen, a platen-head rigidly secured thereto, a loosely-mounted feed-wheel for said platen, a hand-wheel, a pawl connected to said hand-wheel, said pawl being independent of the platen-head and wheel but adapted to engage the said parts to cause them to rotate together or to be disengaged therefrom to enable the platen to move independently of its feed-wheel and a spring for normally maintaining the pawl in engagement.

13. In a type-writing machine, the combination of a platen, a feed-wheel adapted to move independently thereof, a hand-wheel, and an engaging device mounted independently of the platen and the feed-wheel and normally in positive and direct engagement therewith and controlled by the hand-wheel for disconnecting the platen and feed-wheel.

14. In a type-writing machine, the combination of a platen, a housing therein, a platenhead having apertures and secured to said housing and to said platen, a cross-head partly within said housing and having arms which project through openings in said housing, said arms having teeth which project through said apertures in the platen-head, a feed-wheel having teeth on its side and teeth on its periphery, a bearing for said feed-wheel, a detent for the latter, a spindle attached to said crosshead, a hand-piece for said spindle, and a spring acting against said cross-head to keep the teeth thereof normally in mesh with the teeth on the side of the feed-wheel.

15. In a type-writing machine, the combination of a platen, a housing within the same, a cross-head carrying teeth, a spring pressing said cross-head outwardly, a platen-head secured to the platen and having apertures for the teeth of the cross-head, a feed-wheel having teeth on its side and teeth on its periphery, a detent for said feed-wheel, a bearingplate for said feed-wheel, guard-plate 4E4, screws securing the plate 44, bearing, platenhead and housing all together, and a handpiece having a spindle rigidly secured to said cross-head.

16. In a type-writing machine, the combination of a platen, a platen-head rigidly secured thereto, a loosely-mounted feed-wheel movable pawl which is independent of said platen-head and wheel but is adapted to engage said parts to cause them to rotate together or to be disengaged from the feed-wheel to enable the platen to move independently of its feed-Wheel, and a finger- Wheel movable longitudinally of the platen for controlling said pawl.

17 In a type-Writing machine, the combination of a platen, a feed-Wheel adapted to move independently thereof,a handwheel,and engaging means which directly and positively engage the feed-Wheel and which are movable longitudinally of the platen and mounted independently of the platen and feed-Wheel and controlled by the hand-Wheel for connecting and disconnecting the platen and feed-Wheel.

Signed in the borough of Manhattan, city of New York, in the county of New York and 15 State of New York, this 2d day of June, A. D. 1902.

, \NALTER J. BARRON.

Witnesses:

K. V. DONOVAN, E. M. WELLS. 

